Skin it, boot it, or just go for a hike. The men's Burton [ak] Helium Power Grid™ Full-Zip Fleece layers easily, dumps heat on the uphill, and delivers warmth on the way down. The pack-friendly design is wind and weather resistant on the front with an extra-breathable panel on the back. It's that go-to layering piece that can stand alone on the hike up and feels great under a shell, too.

• Wear it for Everything You Do
  Four-way stretch fleece offers multi-sport utility and works as base or midlayer depending on the temperature.
• Warmth and Breathability
  Midweight Polartec® Power Grid™ fleece breathes great and manages sweat when your hiking or working hard.
• Small Details Make a Big Difference
  A snug next-to-skin fit and chafe-free seams add up to comfort that lasts all day long.
• Made to Layer
  A slim fit and thumbhole cuffs make for easy layering when you need to pull on a shell.